Bans on plastic straws are starting to catch on. But a similar fight against plastic bags shows just how hard it is to regulate plastics.
The man's release comes a little over a week after he posted two short videos on his Facebook page in which he said a prison riot was endangering his life.
The two leaders met at the demilitarized zone on the Korean border.
"Some Western observers have been happy to turn a blind eye," said Jane Kinninmont, deputy head of the Middle East and North Africa program at Chatham House, a London think tank.
The official tally won't come till Saturday, but two major exit polls suggest that Ireland is moving away from its conservative Roman Catholic roots.